Here is a post from a thread a couple of years old showing how he used computer fans. If you scroll to the first post in that thread you will see another member used a fan assembly he purchased, but to me it seems to take up more room.
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/25282708/gotomsg/25283909.cfm#25283909I recently emailed the member that did his own thing and he provided some additional useful info:
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The fans I have came in a four pack, they're called Z-Quiet Fan, 80mm x 80mm x 25mm size.
Airflow: 31.50 CFM per unit
Speed: 2700rpm
Current: 0.16a per unit
Life: 30,000 hours
Bearing Type: sleeve
As to wiring, my fridge had a removable cap on the thermostatic sensor wires that went out through the back of the unit (These are part of the fridge and control the heating element, nothing to do with the fans).
I simply snaked a pair of wires through the same path as the thermostat wires and put sleeved blade connectors on the inside so that I could easily remove the fans later for servicing.
I wired them into an existing fused circuit and added two switches on a face plate with colored LED to indicate that they were on or off.
Blue for the fans inside the fridge, red for the four fans outside in the vent duct I built that sit directly above the cooling fins on the outside and draw air over them. ========================================================
I have not done this myself as yet, but may consider it in the future.
